高等学校化学学报 ›› 2024, Vol. 45 ›› Issue (2): 20230473.doi: 10.7503/cjcu20230473

• 有机化学 • 上一篇    

催化邻羟基苯基取代对亚甲基醌与酮亚胺环加成反应合成二氢-1,3-苯并噁嗪化合物

孙一丹1, 李鑫1,2()   

  1. 1.南开大学化学学院, 天津 300071
    2.物质绿色创造与制造海河实验室, 天津 300192
  • 收稿日期:2023-11-13 出版日期:2024-02-10 发布日期:2023-12-01
  • 通讯作者: 李鑫 E-mail:xin_li@nankai.edu.cn
  • 基金资助:
    国家自然科学基金(22371219)

Synthesis of Dihydro-1,3-benzoxazine Compounds via Catalytic Cycloaddition of ortho-Hydroxyphenyl-substituted para-Quinone Methides and Ketimines

SUN Yidan1, LI Xin1,2()   

  1. 1.College of Chemistry,Nankai University,Tianjin 300071,China
    2.Haihe Laboratory of Sustainable Chemical Transformations,Tianjin 300192,China
  • Received:2023-11-13 Online:2024-02-10 Published:2023-12-01
  • Contact: LI Xin E-mail:xin_li@nankai.edu.cn
  • Supported by:
    the National Natural Science Foundation of China(22371219)

摘要:

发展了邻羟基苯基取代对亚甲基醌与酮亚胺在磷酸催化体系中的[4+2]环加成反应, 以高产率和优良的非对映选择性得到了一系列二氢-1,3-苯并噁嗪化合物. 当向反应体系加入催化量的B(C6F5)3时, 产物的产率得到保持且发生非对映选择性翻转.

关键词: 邻羟基苯基取代对亚甲基醌, 酮亚胺, [4+2]环加成反应, 二氢-1,3-苯并噁嗪化合物, 非对映选择性翻转

Abstract:

The [4+2] cycloaddition reaction between ortho-hydroxyphenyl-substituted para-quinone methides and ketimines was carried out in a phosphoric acid catalytic system. A wide range of dihydro-1,3-benzoxazine derivatives were obtained with good yields and excellent diastereoselectivities. When the catalytic amount of B(C6F53 was added to the reaction system, the yield of the product was maintained and the diastereoselectivity was flipped.

Key words: ortho-Hydroxyphenyl-substituted para-quinone methide, Ketimine, [4+2] Cycloaddition reaction, Dihydro-1, 3-benzoxazine, Diastereoselectivity flipped

中图分类号: 

TrendMD: